Active Transport 

Which of the following is wrong? 

1. Uses energy to transport 
2. Uses energy to pump molecules against a concentration gradient 
3. Carried out by specific membrane proteins 
4. Substances are transported from a high concentration to low concentration 

 

Transport Proteins 

1. Can perform only passive transport 
2. Performs passive transport as well as Active transport 
3. Needed only in active transport 
4. They may be required for simple diffusion 

Pumps 

1. Can perform only passive transport 
2. Performs passive transport as well as Active transport 
3. Needed only in active transport 
4. They may be required for simple diffusion 

Membrane proteins are for 

1. Uphill transport 
2. Downhill transport 
3. Uphill as well as downhill transport only 
4. For Facilitated Diffusion only 

Transport proteins are 

1. Specific 
2. Sensitive to inhibitors 
3. Show saturation 
4. All of these 

 Which of the following is not a common characteristic between Active transport and Facilitated Transport? 

1. Use of ATP 
2. Highly selective 
3. Liable to saturate 
4. Under Hormonal Regulation 

 Water 

Which one is wrong for Water. 

1. Provides a medium in which different substances are dissolved 
2. Makes 92% part of watermelon 
3. Makes 30-45% part of most herbaceous plants 
4. Present in dry seeds as well 

Transpiration 

1. Loss of water in soil 
2. Loss of minerals in soil 
3. Loss of water to the air from the leaves 
4. Loss of organic substances because of photorespiration 

 A mature corn plant absorbs…….. of water in a day while a mustard plant absorbs water equal to its own weight in about…….. 

1. 5L, 3hours 
2. 3L, 5 hours 
3. 5L, 5 hours 
4. 3L, 3 hours 

Water is often a major limiting factor in